test(kanban): render lib slot from view helper

Use RenderSlotExt in the kanban library smoke test so even the small public example test path avoids explicit SafeHtml/html plumbing.

req: view/001

req: html_safety/002

examples/kanban/src/lib.rs

@@ -6,7 +6,7 @@ mod tests {
     use super::ui;
     use hemplate::Hemplate;
     use scraper::{Html, Selector};
-    use slhx::{Effect, IntoEffect, Payload, SafeHtml};
+    use slhx::{Effect, IntoEffect, Payload, RenderSlotExt};
     use slhx_test::inspect;
 
     #[derive(Hemplate)]
@@ -27,7 +27,7 @@ mod tests {
     #[test]
     fn kanban_board_updates_generated_slot() {
         fn render_board() -> impl IntoEffect {
-            ui::board::slots::board.html(render_empty_board())
+            ui::board::slots::board.render_view(&empty_board())
         }
 
         let effect = inspect(render_board());
@@ -38,18 +38,14 @@ mod tests {
     // req: html_safety/002 req: view/001 req: test/005
     #[test]
     fn kanban_board_test_payload_is_rendered_by_a_hemplate_view() {
-        let html = render_empty_board();
+        let html = slhx::render_html(&empty_board());
         let document = Html::parse_fragment(html.as_str());
         assert_eq!(document.select(&selector(".columns")).count(), 1);
     }
 
-    fn render_empty_board() -> SafeHtml {
+    fn empty_board() -> BoardColumns {
         // req: html_safety/002 req: view/001
-        let mut html = String::new();
         BoardColumns { columns: Vec::new() }
-            .render_into(&mut html)
-            .expect("kanban board test view renders");
-        SafeHtml::trusted(html)
     }
 
     fn selector(value: &str) -> Selector {